Diagnostic ion

IUPAC RECOMMENDATIONS 2013
Diagnostic ion
Product ion whose formation reveals structural or compositional information about its precursor ion. Note: For example, the phenyl cation in an electron ionization mass spectrum is a diagnostic ion for benzene and derivatives.
Related Term(s):
Reference(s): S. A. Carr, M. J. Huddleston, M. F. Bean. Protein Sci. 2, 183 (1993). (http://dx.doi.org/10.1002/pro.5560020207 )
From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.
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